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WWUS20 KWNS 140840

SEL8

SPC WW 140840

TXZ000-141500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 318

NWS STORM PREDICTION CENTER NORMAN OK

340 AM CDT WED MAY 14 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL TEXAS



EFFECTIVE THIS WEDNESDAY MORNING FROM 340 AM UNTIL 1000 AM CDT.



HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 110

STATUTE MILES EAST AND WEST OF A LINE FROM 10 MILES SOUTHWEST OF

NEW BRAUNFELS TEXAS TO 15 MILES NORTH OF TEMPLE TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU8).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES

SEVERE THUNDERSTORM WATCH NUMBER 315...SEVERE THUNDERSTORM WATCH

NUMBER 316. WATCH NUMBER 315 316 WILL NOT BE IN EFFECT AFTER 340

AM CDT. CONTINUE...WW 317...



DISCUSSION...SMALL CLUSTERS OF TSTMS...INCLUDING A FEW EMBEDDED

SUPERCELLS/SUSTAINED STORMS...EXPECTED TO PERSIST IN AREA OF LOW LVL

WAA/MOISTURE INFLOW.  GRADUALLY INCREASING LARGE SCALE ASCENT/UPR

DIFFLUENCE AHEAD OF NM UPR LOW AND RICH LOW-LVL MOISTURE SUGGEST

POSSIBILITY FOR WET MICROBURSTS...HAIL AND POSSIBLY A BRIEF TORNADO

AS THE STORMS MOVE/DEVELOP GENERALLY ENE.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 25025.





...CORFIDI

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